697790893 has 2 divisors, whose sum is σ = 697790894. Its totient is φ = 697790892.

The previous prime is 697790851. The next prime is 697790897. The reversal of 697790893 is 398097796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356945449 + 340845444 = 18893^2 + 18462^2 .

It is a cyclic number.

It is not a de Polignac number, because 697790893 - 2²⁹ = 160919981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697790897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348895446 + 348895447.

It is an arithmetic number, because the mean of its divisors is an integer number (348895447).

Almost surely, 2^697790893 is an apocalyptic number.

It is an amenable number.

697790893 is a deficient number, since it is larger than the sum of its proper divisors (1).

697790893 is an equidigital number, since it uses as much as digits as its factorization.

697790893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5143824, while the sum is 58.

The square root of 697790893 is about 26415.7319224738. The cubic root of 697790893 is about 886.9689817637.

The spelling of 697790893 in words is "six hundred ninety-seven million, seven hundred ninety thousand, eight hundred ninety-three".